Keyboard



FIG. 1 is a perspective view of a keyboard;

FIG. 2 is a top view of the keyboard of FIG. 1;

FIG. 3 is a bottom view of the keyboard of FIG. 1;

FIG. 4 is a side view of the keyboard of FIG. 1;

FIG. 5 is a side view of the keyboard of FIG. 1;

FIG. 6 is a rear view of the keyboard of FIG. 1; and,

FIG. 7 is a front view of the keyboard of FIG. 1.

The portions drawn in broken lines are shown for illustrative purposes only and do not form part of the claimed design. 

The ornamental design for a keyboard, as shown and described. 